^ioO HECKERCdKS SIJR LA COMPOSITION 



.rgivll.il.lc (Ic voir <ci-l;ii(is (Miihryon;,;,iisi,vs ;i],|,c|,w invan.-.hlcincnl mrmhraur 

 lu'lel/j'ni' Iodic ni(Miil)i;iii(> dc \\vu( , do moiiiciil (urdlc csi M(ii(|ii(>. 



Toi.l (.M.f mm' csl (Ml ■(■' (|-ii„r (m. dc |,|i(.siVms (MuclcpiM's : lai.lol, line 



iiiciiihiimc \il('lliiM' cxislc sciilc; l.mlol im cliotioii, inciiiltr.-iiic iiiii(|ii(> (U' 

 roMif, s'a|)|.li(|ii(' idiiiinlialiMiiciit sue Ic \il('l|i.s; d'aiidrs lois il <>xislc a la 

 lois nil choiioii ("I uiic iiK'iiihi-aiic vilclliiic. On uv rciK-oiiln' (iiic raiTiiiciil 



plusdcdcilX IIKMIlhiailCS. 



I. On lio.nca la lois niic incinhraiK- silcllinc el nn chorion (/(.iic pclln- 

 ci(lc)atironr dc l^cnl' <lcs iiiaiiiiiiirmN. .Ic nc ixnnrais li\cr Ic nHuncnl c\acl 

 on ccllc niciiihiaiM' \ilcllinc sc (onnc anionr iUi jcniic (nif (|ni en csl dc- 

 |)oni'\n an d(d)nl (\t' son dcNclopjicmciK ; niais cc (jiii <'si c<"ilaiii, c'csl (|nc, 

 aussilol aprcs la rccondali(.ii, <|nand Ic xilcllns a snhi Ics premiers Irac- 

 lionncnieiits, il dcvicnl asscz lacilc dc (hMnoiilrcr rcxisleiicc dc <'ellc iiicm- 

 l)iaiic '. 



irapics Ics l.clles rccluTches dc l\l. lA')*\i^\ Ics o'lds des inseelcs soul 

 ciiloiires d.' dcn\ iiiciii!)iaiics, doni rnnc, iiilcinc, sc Conne anx depcns dn 



|»''<>lo|)las Ic l(enr, landis<pic lanlrc, cxrcine, csl nne pi'odiiclion cnli- 



cuhire, nn prodnil dc secrclion d<'s ccllnlcs cpilliclcalcs dn Inl.c .nancn, par 

 cons..,pien(, nn vrai rhonon. 



II cxisic ciirorc .iii<- niciiil.ianc Nilellinc el nn clioiioii dans ra-iif dc |a 

 pinpa.-ldes iNcinalodes. Daprcs h's rcchcirlnvs dc IVI. Schncidci-', il ("xisle- 

 i"iil, cl.cz .picl(pics-niis <lc CCS aniinaiix , pinsicin's nicnihraiics n ilcllincs. 



II. i:<rnr des oiscanx csl , rvn d'nnc inciiibrancN il<.||ine (pii sViiK.nrc, 



dans ro\idnclc, dc pinsicnrs conclies (rallmiiiiiic. II nc sc ((.rnic dans la cap- 

 snl(" dc dc (iraaf, aiilonr dc la incnihiane vilcllinc, licii (pie I on pnissc coni- 

 pm'cra la zoii(> pcllneidc (cliorion; dc l^enC des niaiinnilcres. 



Lc cliorion csl nne nieinhiane <lesline<' a piescncr r<cnr el a Ic prolc^MT. 

 On .•onipreiid ,p,cllc lassc delanl cl.cz Ics oiscanx, on r.cnf pn.prc.nenl dil 

 sc rc^cl de plnsienis parlies a<rcss(nirs, panni lcs(p.cllcs il sVii In.nvc qui 



' Vo,r|,lusl,;M,l.,,.^,. IW. 



